3x^2-78=0

Solution for 3x^2-78=0 equation:

Simplifying
3x2 + -78 = 0

Reorder the terms:
-78 + 3x2 = 0

Solving
-78 + 3x2 = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '78' to each side of the equation.
-78 + 78 + 3x2 = 0 + 78

Combine like terms: -78 + 78 = 0
0 + 3x2 = 0 + 78
3x2 = 0 + 78

Combine like terms: 0 + 78 = 78
3x2 = 78

Divide each side by '3'.
x2 = 26

Simplifying
x2 = 26

Take the square root of each side:
x = {-5.099019514, 5.099019514}